Now let's try isolating our lower abs only. Keeping the knees bent, tailbone down, chest lifted, shoulders back, arms out. You're going to contract about an inch below the belly button to pull the muscles in. In the beginning you might try to rotate the hips under which is fine so just find that isolation, but ideally you want this to be a purely muscular movement that does not compromise a normal position. So in the beginning let's just rotate the hips under contracting in, and release, and in, and release, and make sure that when you release you do not untuck your tailbone back, you wanna make sure that your back stays straight even when you uncurl to come back to neutral position. So let's try that with music. Now try to isolate just the lower ab muscles, do not move your hips, so the hip bones will actually remain neutral. Trying to contract just the lower abs, pulling in, and release, in, and release. And a little bit faster. While you're isolating keep the upper abs relaxed. And faster. That's how you isolate your lower abs.